Security-One-27B
Superagent's 27B security decision model. It scores 2 to 16 supplied options in one forward pass and returns a probability for each, for triaging prompt injection, agent tool calls, code changes, logs and alerts. Apache-2.0 weights (gated, auto-approved) plus a hosted API.
A continual LoRA fine-tune of AutoJev-27B (itself on Qwen3.8-27B), merged to BF16, built as an always-on first-pass security triage layer. Prompt injection is the best-validated use; code, application and infrastructure triage are patterns the maker has not benchmarked equally. Calibrated with a fixed temperature, which the maker warns can shift across domains, formats, quantisation and engines; its 0.70 threshold is a release policy. English-only evaluation. Not a chat model: use the maker's SGLang recipe or the hosted API (model id security-one, 1 to 64 questions per state, billed in Superagent credits). The maker also reports 86.15% on JevBench's public v1.2 set, its own run of that third-party benchmark.
What it decides
- choice — picks one option from a set
- score — places the input on an ordered scale
- noul — answers a yes/no question with one probability
- classify — assigns a category from a fixed taxonomy
- route — sends the input to one of several destinations
At a glance
| Parameters | 27B |
| Base model | denis-pplx/autojev-27b |
| Maker | Superagent |
| Released | 2026-09-25 |
| License | apache-2.0 |
| Reported accuracy | 99.8% |
Hosted API
Served by Superagent. Get access · API docs.
Get the weights
pip install systemonemodels
systemone pull superagent/security-one
The files are served from the maker's Hugging Face repository, superagent-ai/security-one-27b, and verified against the checksums recorded here.